CVE-2026-25089 | A improper neutralization of special elements used in an os … | CVSS 9.1 CRITICAL

Description

A improper neutralization of special elements used in an os command ('os command injection') vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.5, FortiSandbox 4.4.0 through 4.4.8, FortiSandbox 4.2 all versions, FortiSandbox Cloud 5.0.4 through 5.0.5, FortiSandbox PaaS 5.0.4 through 5.0.5 may allow an unauthenticated attacker to execute unauthorized commands via specifically crafted HTTP requests

Metadata

CVE ID: CVE-2026-25089
State: PUBLISHED
Assigner: fortinet
Reserved: 2026-01-29 09:27 UTC
Published: 2026-06-09 14:27 UTC
Last updated: 2026-07-17 03:56 UTC
Primary CWE: CWE-78
Execute unauthorized code or commands
Vendor / Product: Fortinet / FortiSandbox
Sources: cve.org · NVD

Severity & Metrics

9.1 CRITICAL CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C

SSVC — CISA Coordinator

Exploitation: ACTIVE
Automatable: yes
Tech. Impact: total

CISA Known Exploited Vulnerability

Vulnerability name: Fortinet FortiSandbox OS Command Injection Vulnerability
Vendor: Fortinet
Product: FortiSandbox
Added to KEV: 2026-07-16
Due date: 2026-07-19
Ransomware: Not known

Required action

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

CISA description

Fortinet FortiSandbox, FortiSandbox Cloud, and FortiSandbox PaaS contain an OS command injection vulnerability that allows an unauthenticated attacker to execute unauthorized commands via specifically crafted HTTP requests.

Affected products (3)

Vendor	Product	Platform	Versions
Fortinet	FortiSandbox	—	5.0.0 ≤ 5.0.5, 4.4.0 ≤ 4.4.8, 4.2.1 ≤ 4.2.8
Fortinet	FortiSandbox Cloud	—	5.0.4 ≤ 5.0.5
Fortinet	FortiSandbox PaaS	—	5.0.4 ≤ 5.0.5

Weakness (CWE)

CWE	Source	Description
CWE-78	cna	Execute unauthorized code or commands

CVSS scores (1)

Score	Severity	Version	Source	Vector
9.1	CRITICAL	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C

References (1)

https://fortiguard.fortinet.com/psirt/FG-IR-26-141 https://fortiguard.fortinet.com/psirt/FG-IR-26-141